| Statistic | Reportedincidents | /100k people | Marble Rock/100k people | Iowa/100k people | National/100k people |
| Total crime | 0 | n/a (estimate) | 1,812 (estimate) | 1,540 | 2,119 |
| Murder | n/a | n/a | n/a | 2.1 | 5.0 |
| Rape | n/a | n/a | n/a | 35.2 | 37.5 |
| Robbery | n/a | n/a | n/a | 18.7 | 60.6 |
| Assault | n/a | n/a | n/a | 187.2 | 256.1 |
| Violent crime | n/a | n/a (estimate) | 286 (estimate) | 243 | 359 |
| Burglary | n/a | n/a | n/a | 199.1 | 229.2 |
| Theft | n/a | n/a | n/a | 962.6 | 1,272.1 |
| Vehicle theft | n/a | n/a | n/a | 135.1 | 258.8 |
| Property crime | n/a | n/a (estimate) | 1,526 (estimate) | 1,297 | 1,760 |


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| Item | Marble Rock | Iowa | National |
| Law enforcement employees (officers & civilians) | n/a | 3,827 | 558,732 |
| Police officers & civilians /1000 residents | n/a | 1.8 | 3.3 |
| State | Total offenders | Iowa /100K | National /100K |
| Iowa | 6,040 | 205 | 266 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Nora Springs, IA | 1,648 | 95 | 509 | 605 |
| Greene, IA | 1,182 | 97 | 518 | 615 |
| Clarksville, IA | 1,345 | 101 | 539 | 640 |
| Allison, IA | 1,134 | 102 | 542 | 644 |
| Charles City, IA | 7,351 | 320 | 836 | 1,156 |
| Colwell, IA | 60 | 232 | 1,239 | 1,471 |
| Rockford, IA | 827 | 268 | 1,429 | 1,696 |
| Marble Rock, IA | 322 | 286 | 1,526 | 1,812 |
| City | Population | Violent crime/100k people | Property crime/100k people | Total crime/100k people |
| Lake Angelus, MI | 322 | 175 | 557 | 732 |
| Bridgewater, SD | 322 | 466 | 2,040 | 2,506 |
| Laclede, MO | 322 | 611 | 2,568 | 3,180 |
| Lenora, KS | 322 | 626 | 2,788 | 3,413 |
| Optima, OK | 322 | 602 | 2,813 | 3,415 |
| Marble Rock, IA | 322 | 286 | 1,526 | 1,812 |